# Copyright 2023 Ant Group Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


import platform


def rows_count(filename):
    """get rows count from file"""
    line_break = b'\r\n' if platform.system().lower() == "windows" else b'\n'
    with open(filename, "rb") as f:
        count = 0
        buf_size = 1024 * 1024
        buf = f.read(buf_size)
        while buf:
            count += buf.count(line_break)
            buf = f.read(buf_size)
        return count
